Improvement in cistern-filters



apoint below its outer shell.

@anni Gtiiilire,

PATRGK LAUGHLIN, or DANVILL, KENTUCKY.'

- .Laim Patent No'. 100,418, dazed March. 1, 1870.

IMPROVEMENT IN CISTERN-IILTERS.

The Schedule referred to in these Letters Patent and making part of the same I, PATRICK LAUGHLIN, of the town of Danville, county of Boyle, and State of Kentucky, have invented certainlmprovements in Water-l`ilters, of which the.`

sand, gravel, charcoah'and sponge, by the device herein described, by a reversed action ot' the water in the apparatus; t

In the accompanying drawingv Figure 1 represents a, side View of the iilter, and Figure' 3, a vertical sectional view of the body H of the filter-pipes G and A A;

The outward form of the apparatus in iig. l is so simple as to be easily understood, and the/interior construction is pretty fully shown by fig. 2.

,lhe pipe G is a simple hollow cylinder, fixed in the center of the interior of the body H, extending from the 'strainer J down through its door or bottom e e to lhsppe is for the disch. rge of the, water after it has passedilnfough the filter. It has no holes or openings in it except those at its ends. j l. l

The 'pipe A A isfor the conveyance of the. water from the roof of a house, or elsewhere, into the `filter.

It conducts the water iut-o the chamber B B, which is the space .between the bottoni e e and thev strainer f.

The pipe C is for the discharge of the water made dirty in the process of cleaning the lter before men tioned, and c is a cap witha female screw in it, by which that pipe is closed when the filter is in use.

When water is admitted frornabove through the pipe A into the chamber B B, the pipe C being closed 'by the capre, the weight of the column of water in the pipe A forces the water in the chamber to pass up `through the holes in the strainer or perforated plate g, and thence up through the bed D D of broken stone, gravel, or charcoal, and thence up through another perforated plate or strainer, Land another bed, E E,

of said gravel or charcoal, and through a layer, F F, of sponge or of any other similar porous and fil ro 1s substance, and thence throughthe strainer J and ih :n it will fall intothe top end of the pipe G, and discharge from the lower end into the cistern or other receptacle provided for it. v

The vminute division and subdivision of each drop of .water while it is being forced by the weight of the column in the pipe A through the series of perforated plates and beds of charcoal, sand, Src., subject it to both the chemical and mechanical act-ion of these substances, to which the impurities of the water will adhere. f

p Then, when these bedsof material have become `loaded with the impurities of the water, they may he easily and quickly cleansed by opening the pipe- C, for then the water in the body of theI vessel H will sink and pass down through these, and discharge through pipe C, and to make this process more effectual, the cover m may be removed and a stream of water from above be allowed to fall upon the strainer, (or the strainer may be removed hy the handle h h,) and pass downward in such quantities as may be desirable until the cleansing is eiected.

The apparatus stands upright, as shown in the drawing, and the most `obvious use of. it is to lter rain-water from the roofs of buildings during its passage to cisterus, but it is needless to say that its use maybe greatly varied so as to suitdierent situations and purposes.

The body of the shell and the perforated plates and the pipes may be made of any suitable material.

rlhis apparatus is so simply constructed and may he so cheaply manufactured as to be within the reach of almost everyl housekt-zeper.

What I claim to he new, and desire to secure by Letters Patent, is

The body H, with the pipes A, G, and C, bottom e e, when constructed, arranged, and proportioned suhstantally as described, in combination with the s trainers J fg, beds D and E, and the layer of sponge F, as setforth, for the purposes described.

` PATRICK LAUGHLIN.

Witnesses:

JOHN SHELLEY, J. R. NICHOLS. 

